Double duty lineman&#39;s socket



FIG. 1 is a front top plan view of the double duty lineman's socket showing my new design;

FIG. 2 is a sectional view thereof along the lines 2--2 in FIG. 1; and,

FIG. 3 is a right side elevational view thereof. 

The ornamental design for double duty lineman's socket, as shown and described. 